After shearing 2 keys I decided to remove the 1st idler gear and run with the kickstarter only. (This was 8 months ago) The wr450 threads on off-road.com looked interesting so I dijested as many emails on the woodruff key problem as possible. Here is my conclusion. The 1st idler gear (closest to the starter) is supposed to spin at appx 34 ft-lbs. The new replacement is supposed to spin at 26 ft-lbs. I tested mine using a vice, wood and a torque wrench. The initial torque to move this the first time was about 85 ft-lbs. I presume it was siezed form the factory! Repeated tests after the initial were appx. 28 ft-lbs. Soon this will be reinstalled and tested ... I get back with the results.